package yuan.datastructure.list;

public interface List {
	void clear();
	boolean isEmpty();
	int size();
	Object getElementAt(int i);
	int locateElement(Object e);
	Object first();
	Object prior();
	Object next();
	Object last();
	void insert(Object e);
	void insert(Object e, int i);
	void delete(Object e);
	void delete(int i);
}
